Machine for upsetting heads on nail-strips



(No Model.)

R,ASHE. V MACHINE FOR UP'SETTING HEADS ON NAIL STRIPS. No. 319,381.Patented June 2, 1885.

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ROBERT ASHE, OF BOSTON, MASSACHUSETTS.

MACHINE FOR UPSETTING HEADS ON NAIL-STRIPS.

SPECIFICATION forming part of Letters Patent No. 319,381, dated June2,1885.

Application filed July 14. 1884.

To all whom it may concern:

7 Be it known that 1, ROBERT AsI-IE, of Boston, in the county ofMiddlesex and State of Massachusetts, have invented an Improvement inMachines for Upsetting the Head- Forming Projections of Comb-NailStrips, of which the following description, in connection with theaccompanyingdrawings, is a specification, like letters on the drawingsrepresenting like parts.

This invention is an improvement on a machine represented in UnitedStates application No. 137,464, filed July 11, 1884, to whichreference'may be had.

My invention has especial reference to the feeding and clampingmechanisms to feed the comb-nail strip and clamp it intermittingly whilethe head-forming projections are being upset by a hammer, such as shownin my application referred to, or by hand.

In the machine herein described the movable member of the clamp isprovided with rests for the web of the comb nail strip, and the strip isfed between the clamp by a feed-wheel having teeth to enter the spacesbetween the shanks of the nails.

Figure 1 in top view represents a sufficient portion of a machine forthe purpose described to enable my invention to be understood; Fig. 2, asection thereof in the dotted line a; m. Fig. 3 shows a comb-nail stripsuch as it is the object of my invention to provide with regular heads,and Fig. 4 shows the same strip after its heads have been upset in themachine.

The comb-nail strip, shown in Fig. 3 as composed of shanks a,head-forming proj ections a, and a connected web, a is to have itshead-forming projections upset to constitute heads a as shown in Fig. 4.

The bed A has secured to it the uprights B B, which constitute the wallsor guideway between which is left the space a, for the passage of thecomb-nail strip, the same being moved by the teeth 2 3 of thefecd-wheels b 11, respectively, the said feed-wheels being mounted onthe axles b d. The feed-wheel b is provided with ratchet-wheel 13, theteeth of which are engaged by the push-pawl 7, carried by thepawl-carrier 5. The feed-wheel d is provided with aratchet-wheel,4,which is engaged by a pulling pawl, 18, on apawl-carrier, 6.

(No model.)

] The pawl-carriers 5 and 6 are pivoted to a slide-bar, 9, connected bylinkh with thelever m,pivoted at m, the other end of the said leverhaving a stud which enters the groove 12 of the cam 6, fast on the shaftor, held in the bearings A A and rotated in any usual manner, thevibration of the lever causing the pawls to simultaneously turn thefeed-wheels b and d in the same direction, the teeth of the feedwheelsbetween the shanks of the nails feeding the strip positively.

Near the central part of the guideway is located the stationary member fof the clamp, it being attached to the bed by the screws f f.

The movable member H of the clamp is pivoted at H, and is just like thevibrating clamp member marked E in my application referred to, exceptthat herein the movable clamp member is provided at its front side orface with a series of rests, 8, made like gear-teeth, but which do notextend so high but what there is left above their tops a wall, 14, tomeet the side of the web of the comb-nail strip, while the under side ofthe said web is sustained by the said rests, a portion of the wall ofthe stationary member supporting the opposite side of the said Web.

The sides of the web a of the comb-nail strip are supportedsubstantially up to the bottoms of the notches between the head-formingprojections a, and the web is firmly clamped between the jaws f and H,when the head-forming projections are upset by a hammer or hammers. Theclamping member H is moved forward toward the clamping member f by theclamp-mover, (shown as a cam, F,) while the feed-wheels b and (I remainat rest, the teeth 8 of the clamping member entering between the shanksaof the nails of the comb-nail strip. The clamp H is pressed forward toclamp and hold the web of the strip while the head-forming projectionsare upset to form heads, as at a, and then the movable member is movedbackward far enough to remove its teeth 8 from between the said shanks,and then the feed-wheels are moved to feed the strip the distance of oneor more nails, preferably two or three, and then the clamp member H isagain turned forward to sup port and clamp the web as before preparatoryto upsetting the projections a of one or more nails of the strip,

I have not herein shown the hammer, nor any mechanism by which tooperate the same and the cam F; but the same may be as in my saidapplication, or, instead of the particular hammer and mechanism foroperating it as therein shown, Imay employ any other usual or suitablehammer mechanism heretofore used to upset nail-heads.

The employment of two wheels enables me to hold the comb-nail strip atthe right and at the left of. the clamp, thus insuring the more accuratefeeding of the comb-nail strip to place the spaces between the shanks inposition to be more certainly entered by the rests 8, attached to theclamp member H.

The part of the bed A which is removed from the right of Fig. 1, ifshown, would contain a shaft having a cam, a hammer-carrying lever, aneccentric, a link to vibrate the cam F, the said shaft, cam, lever,eccentric, and link being the same, respectively, as the parts letteredD, F E, E and E in my said application, and in practice the shaftreferred to and not shown may be connected by toothed gear (notshown)with and to drive the shaft 12 at the proper sp eed.

The groove to will be covered at top, as in my other applicationreferred to.

I claim- 1. In a machine to upset the head-forming projections of acomb-nail strip, the clamp composed of a jaw, f, and a movable jaw, H,provided'with rests for the web of the strip, the said clamp supportinga part of each side of the web of the strip, combined with twofeed-wheels to engage and feed the comb-nail strip between .the clampwhen the latter is open, substantially as described.

2. In a machine to upset the head-forming projections of a comb-nailstrip, a clamp to hold the strip while its head-forming projections arebeing upset, combined with an independent feed-wheel and means to moveit, the feed-wheel engaging the strip and feeding it positively,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses;

ROBERT ASHE. WVitnesses:

G. W. GREGORY, B. J. NoYEs.

